Wall Angle Calculator

Last updated: 12 Jun 2025 | Author: Brij | Review By: Irshad

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Use our Wall Angle Calculator to quickly and accurately determine the angle of your wall. Simply enter the wall height and the length away from the wall, and the calculator will provide the exact wall angle.

Wall height:

Length Away from the Wall:

Wall Angle

degrees

In construction and home improvement projects, determining the correct wall angle is essential for ensuring that walls are built accurately and meet your design specifications. Whether you’re working on sloped ceilings, staircases, or angled corners, getting the right angle can make all the difference.

What Is a Wall Angle Calculator?

A Wall Angle Calculator is a tool that helps you calculate the angle between a wall and the floor, or between two walls, based on key dimensions. The calculator uses basic trigonometry to determine the angle of the wall relative to a flat surface. You only need to provide two simple inputs:

Wall Height (in feet)
Length Away from the Wall (in feet)

With these values, the calculator will compute the angle of the wall, making it easy to plan for angled or sloped surfaces in your building project.

The Formula to Calculate the Wall Angle

The wall angle is calculated using basic trigonometry, specifically the tangent function. The formula to calculate the wall angle is:

$\text{Angle} = \arctan \left( \frac{\text{Wall Height}}{\text{Length Away from Wall}} \right)$

Explanation of the Formula:

Wall Height: This is the vertical height of the wall (in feet).
Length Away from Wall: This refers to the horizontal distance from the base of the wall to the point where you want to calculate the angle (also in feet).
arctan: The arctangent function (inverse of the tangent) is used to find the angle in degrees from the ratio of the opposite side (wall height) to the adjacent side (length away from the wall).

This formula gives you the angle of the wall relative to the floor or another surface.

Example Calculation

Let’s go through an example to better understand how the formula works. Suppose you have a wall with a height of 8 feet, and the length away from the wall is 12 feet. Here’s how you calculate the angle:

Wall Height: 8 feet
Length Away from the Wall: 12 feet

Using the formula:

$\text{Angle} = \arctan \left( \frac{\text{8}}{\text{12}} \right)$